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1. 发明授权

US6084878A External rules checker interface 失效
标题翻译：外部规则检查器界面
公开(公告)号：US6084878A
公开(公告)日：2000-07-04
申请号：US993715
申请日：1997-12-18
申请人： Ian Crayford , Denise Kerstein , Peter Ka-Fai Chow , Chandan Egbert , Thomas J. Runaldue
发明人： Ian Crayford , Denise Kerstein , Peter Ka-Fai Chow , Chandan Egbert , Thomas J. Runaldue
IPC分类号： H04L12/46 , H04L12/56 , H04L12/28 , H04L12/54
CPC分类号： H04L12/4641 , H04L49/25 , H04L49/3027 , H04L49/351 , H04L49/354
摘要： An interface located on a network switch transmits header information to an external device that makes data forwarding decisions. The interface receives and transmits header information that includes the source and destination address of the data. The external device generates data forwarding information and transmits the information back to the switch via the interface device. The network switch uses the information obtained via the interface and forwards the data packets to the appropriate destination.
摘要翻译：位于网络交换机上的接口将报头信息发送到进行数据转发决策的外部设备。该接口接收并发送包括数据的源地址和目标地址的标题信息。外部设备生成数据转发信息，并通过接口设备将信息发送回交换机。网络交换机使用通过接口获得的信息，并将数据包转发到适当的目的地。

2. 发明授权

US6084877A Network switch port configured for generating an index key for a network switch routing table using a programmable hash function 失效
标题翻译：网络交换机端口被配置为使用可编程散列函数生成用于网络交换机路由表的索引密钥
公开(公告)号：US6084877A
公开(公告)日：2000-07-04
申请号：US992797
申请日：1997-12-18
申请人： Chandan Egbert , Peter Ka-Fai Chow , Denise Kerstein
发明人： Chandan Egbert , Peter Ka-Fai Chow , Denise Kerstein
IPC分类号： H04L12/56 , H04L12/28
CPC分类号： H04L49/309 , H04L45/745 , H04L49/3009 , H04L49/103 , H04L49/3054 , H04L49/351 , H04L49/40
摘要： A network switch configured for switching data packets across multiple switch ports includes in each network switch port a hash key generator configured to generate a hash key for each network address in a received data packet. Each data packet received by a network switch port includes a source address and a destination address according to IEEE 802.3 protocol. The hash key generator in the corresponding network switch port generates the hash key for the source and destination addresses as the data packet is received by the network switch port, minimizing processing latency in generating the hash key. The hash keys are forwarded to an address table configured to include a programmable number of bin entries, where each bin entry is configured to reference a plurality of address table entries storing the switching logic information for respective network addresses. The hash key, which references a selected one of the bin entries, is used to obtain the switching logic for the corresponding address by accessing the appropriate table entry referenced by the selected bin entry.
摘要翻译：配置用于跨多个交换机端口切换数据分组的网络交换机包括：在每个网络交换机端口中，散列密钥发生器被配置为为接收的数据分组中的每个网络地址生成散列密钥。由网络交换机端口接收的每个数据分组包括根据IEEE 802.3协议的源地址和目的地址。相应的网络交换机端口中的散列密钥生成器在数据包被网络交换机端口接收时生成源和目的地址的散列密钥，从而最小化生成哈希密钥的处理延迟。散列密钥被转发到配置成包括可编程数量的bin条目的地址表，其中每个bin条目被配置为引用存储相应网络地址的切换逻辑信息的多个地址表条目。引用所选择的一个bin条目的哈希密钥用于通过访问由所选择的bin条目引用的适当的表条目来获得相应地址的切换逻辑。

3. 发明授权

US5953335A Method and apparatus for selectively discarding packets for blocked output queues in the network switch 失效
标题翻译：用于选择性地丢弃网络交换机中阻塞的输出队列的分组的方法和装置
公开(公告)号：US5953335A
公开(公告)日：1999-09-14
申请号：US992428
申请日：1997-12-18
申请人： Bahadir Erimli , Thomas J. Runaldue , Chandan Egbert , Denise Kerstein
发明人： Bahadir Erimli , Thomas J. Runaldue , Chandan Egbert , Denise Kerstein
IPC分类号： H04L12/18 , H04L12/24 , H04L12/56 , H04Q3/545 , H04L12/46 , H04L12/26
CPC分类号： H04L49/103 , H04L12/18 , H04L41/0213 , H04L49/201 , H04L49/255 , H04L49/3027 , H04L49/351 , H04Q3/54591 , H04L12/1868 , H04L49/20 , H04L49/30 , H04L49/3009 , H04L49/3054 , H04L49/354 , H04L49/45 , H04Q2213/1316 , H04Q2213/13162
摘要： An apparatus and method of controlling the transmission of copies of a frame of data from a multiport device, such as a multiport network switch, determines which ones of the ports are designated to transmit a copy of a multicopy frame received at the switch. The switch then determines which of these designated ports are not available to transmit a copy of the frame. The copies are transmitted from those designated ports that are available to transmit a copy of the multicopy frame, while the copies are discarded for those designated ports that are not available to transmit a copy of that multicopy frame.
摘要翻译：控制来自多端口设备（例如多端口网络交换机）的数据帧的副本的传输的装置和方法确定哪些端口被指定来传送在交换机处接收的多复制帧的副本。然后，交换机确定哪些指定的端口不可用于发送帧的副本。从可用于发送多拷贝帧的副本的指定端口发送副本，而对于不可用于传送该多拷贝帧的副本的那些指定端口，丢弃副本。

4. 发明授权

US06223305B1 Method and apparatus for resetting, enabling and freezing a communication device in a diagnostic process 失效
标题翻译：用于在诊断过程中重置，启用和冻结通信设备的方法和装置
公开(公告)号：US06223305B1
公开(公告)日：2001-04-24
申请号：US08993047
申请日：1997-12-18
申请人： Philip Simmons , Denise Kerstein , Thomas J. Runaldue , Chandan Egbert , Bahadir Erimli
发明人： Philip Simmons , Denise Kerstein , Thomas J. Runaldue , Chandan Egbert , Bahadir Erimli
IPC分类号： G06F1126
CPC分类号： H04L49/3009 , G06F13/1605 , G06F13/24 , G11C11/412 , H04L12/1863 , H04L12/4641 , H04L12/4645 , H04L12/467 , H04L41/0213 , H04L47/50 , H04L47/6225 , H04L49/103 , H04L49/201 , H04L49/25 , H04L49/255 , H04L49/30 , H04L49/3027 , H04L49/3054 , H04L49/351 , H04L49/354 , H04L49/40 , H04L49/50 , H04L49/552 , H04L49/555 , H04L49/90 , H04L49/901 , H04L49/9047 , H04L49/9063 , H04L49/9073 , H04L49/9078 , H04L49/9084 , H04Q3/54591 , H04Q2213/1316 , H04Q2213/13162
摘要： A resetting, enabling and freezing system is provided for controlling a communication device in a diagnostic process. A hardware reset of the device may be performed by a host via a reset pin of a PCI interface. A software reset of the device may be provided by setting a reset bit in a command register. To stop operations of the device substantially instantaneously, a freeze mode of diagnostics is provided. The freeze mode may be initiated using hardware or software freezing. To provide the hardware freezing, diagnostic logic is supplied with a freeze signal via a freeze pin of the PCI interface. The software freezing is performed by setting a freeze bit in the command register. To enable a diagnostician to reproduce an event causing an error, an enable/disable mode of diagnostics is carried out. In this mode, elements of the device are disabled one after another in a serial fashion, with a disable signal being passed serially from one element to another. After the elements are disabled, they may be set into a chosen state to recreate a required event.
摘要翻译：提供了一种复位，启用和冻结系统，用于在诊断过程中控制通信设备。设备的硬件复位可以由主机经由PCI接口的复位引脚执行。可以通过在命令寄存器中设置复位位来提供器件的软件复位。为了基本上瞬间停止设备的操作，提供了诊断的冻结模式。可以使用硬件或软件冻结来启动冻结模式。为了提供硬件冻结，诊断逻辑通过PCI接口的冻结引脚提供冻结信号。通过在命令寄存器中设置冻结位来执行软件冻结。为了使诊断程序能够重现导致错误的事件，执行启用/禁用模式的诊断。在这种模式下，器件的元件以串行方式一个接一个地禁用，其中禁用信号从一个元件串行地传递到另一个元件。元素被禁用后，它们可能被设置为选择状态以重新创建所需的事件。

5. 发明授权

US6111875A Apparatus and method for disabling external frame forwarding device for use with a network switch 失效
标题翻译：用于禁用与网络交换机一起使用的外部帧转发设备的装置和方法
公开(公告)号：US6111875A
公开(公告)日：2000-08-29
申请号：US993144
申请日：1997-12-18
申请人： Denise Kerstein , Chandan Egbert , Bahadir Erimli , Thomas J. Runaldue
发明人： Denise Kerstein , Chandan Egbert , Bahadir Erimli , Thomas J. Runaldue
IPC分类号： H04L13/08 , G06F11/26 , G06F12/00 , G06F13/00 , G06F13/10 , G06F13/16 , G06F13/24 , G06F15/00 , G06F15/16 , G08B5/00 , G11C11/412 , H04B7/14 , H04J3/02 , H04J3/12 , H04J3/22 , H04J3/24 , H04L12/18 , H04L12/24 , H04L12/28 , H04L12/413 , H04L12/44 , H04L12/46 , H04L12/50 , H04L12/54 , H04L12/66 , H04L12/861 , H04L12/863 , H04L12/879 , H04L12/931 , H04L12/933 , H04L12/935 , H04L12/937 , H04L12/939 , H04L12/947 , H04Q3/545 , H04Q11/00 , H04L12/56
CPC分类号： H04L49/3009 , G06F13/1605 , G06F13/24 , G11C11/412 , H04L12/4641 , H04L12/5693 , H04L41/0213 , H04L47/6225 , H04L49/103 , H04L49/201 , H04L49/25 , H04L49/255 , H04L49/30 , H04L49/3027 , H04L49/351 , H04L49/354 , H04L49/50 , H04L49/552 , H04L49/555 , H04L49/90 , H04L49/901 , H04L49/9047 , H04L49/9063 , H04L49/9073 , H04L49/9078 , H04L49/9084 , H04Q3/54591 , H04L12/1863 , H04L12/4645 , H04L12/467 , H04L49/3054 , H04L49/40 , H04Q2213/1316 , H04Q2213/13162
摘要： An interface device enables an external device connected to a network switch to be disabled. The interface device receives and transmits data to an external device which makes data forwarding decisions. When a disable signal is received by the network switch, the disable signal is transmitted to the external device over an existing data path. The external device returns an acknowledgement signal over an existing path to the switch. A timer is included as a failsafe mechanism in case the external device does not return an acknowledge signal. The timer waits a predetermined period of time and continues the shut down of the network switch as if the acknowledge signal was received.
摘要翻译：接口设备使得连接到网络交换机的外部设备能够被禁用。接口设备接收并发送数据到外部设备，进行数据转发决策。当网络交换机接收到禁用信号时，禁用信号通过现有数据路径发送到外部设备。外部设备通过现有路径返回到交换机的确认信号。在外部设备未返回确认信号的情况下，包括定时器作为故障保护机制。定时器等待预定的时间段，并继续关闭网络交换机，就像收到确认信号一样。

6. 发明授权

US6128654A Method and apparatus for transmitting multiple copies by replicating data identifiers 失效
标题翻译：通过复制数据标识符来发送多个副本的方法和装置
公开(公告)号：US6128654A
公开(公告)日：2000-10-03
申请号：US992924
申请日：1997-12-18
申请人： Thomas J. Runaldue , Bahadir Erimli , Chandan Egbert , Eric Tsin-ho Leung , Ian Crayford
发明人： Thomas J. Runaldue , Bahadir Erimli , Chandan Egbert , Eric Tsin-ho Leung , Ian Crayford
IPC分类号： G06F5/06 , H04L12/18 , H04L12/24 , H04L12/46 , H04L12/56 , H04L29/06 , H04Q3/545 , G06F15/16
CPC分类号： H04L49/901 , G06F5/06 , H04L41/0213 , H04L49/255 , H04L49/30 , H04L49/90 , H04L49/9047 , H04L49/9073 , H04L49/9078 , H04L69/26 , H04Q3/54591 , H04L49/3009 , H04L49/3027 , H04L49/354 , H04L49/45 , H04Q2213/1316 , H04Q2213/13162
摘要： A method and arrangement for transmitting multiple copies of a frame from a network switch in a packet switched network stores a single copy of the frame received at the switch into external memory. The frame is stored at a location in memory pointed to by a frame pointer. In queuing multiple transmissions of the stored frame in the switch, the frame pointer, and not the frame itself, is replicated and queued for transmission in the network switch.
摘要翻译：用于从分组交换网络中的网络交换机发送多个帧的副本的方法和装置将在交换机处接收到的帧的单个副本存储到外部存储器中。帧被存储在由帧指针指向的存储器中的位置。在对交换机中存储的帧的多次发送进行排队时，帧指针而不是帧本身被复制并排队等待在网络交换机中传输。

7. 发明授权

US07502366B1 Arrangement in a network switch for prioritizing data frames based on user-defined frame attributes 有权
标题翻译：网络交换机中的布置，用于基于用户定义的帧属性对数据帧进行优先级排序
公开(公告)号：US07502366B1
公开(公告)日：2009-03-10
申请号：US09576021
申请日：2000-05-23
申请人： Bahadir Erimli , Gopal S. Krishna , Chandan Egbert , Peter Ka-Fai Chow , Mrudula Kanuri , Shr-Jie Tzeng , Somnath Viswanath , Xiaohua Zhuang
发明人： Bahadir Erimli , Gopal S. Krishna , Chandan Egbert , Peter Ka-Fai Chow , Mrudula Kanuri , Shr-Jie Tzeng , Somnath Viswanath , Xiaohua Zhuang
IPC分类号： H04L12/28
CPC分类号： H04L47/10 , H04L47/13 , H04L47/20
摘要： A network switch includes network switch ports, each including a port filter configured for detecting user-selected attributes from a received layer 2 type data frame. Each port filter, upon detecting a user-selected attribute in a received layer 2 type data frame, sends a signal to a switching module indicating the determined presence of the user-selected attribute, enabling the switching module to generate a switching decision based on the corresponding user-selected attribute and based on a corresponding user-defined switching policy. The switching policy may specify a priority class, or a guaranteed quality of service (e.g., a guaranteed bandwidth), ensuring that the received layer 2 type data frame receives the appropriate switching support. The user-selected attributes for the port filter and the user-defined switching policy for the switching module are programmed by a host processor. Hence, the integrated network switch is able to perform advanced switching operations for layer 2 type data packets to ensure quality of service requirements, independent of priority information specified in the layer 2 type data packets, based on the user-selected attributes in the layer 2 type data packets and the user-defined switching policies established for the switching module.
摘要翻译：网络交换机包括网络交换机端口，每个端口包括被配置为从接收到的层2型数据帧中检测用户选择的属性的端口过滤器。每个端口滤波器在检测到接收到的层2类型数据帧中的用户选择的属性时，向交换模块发送指示所确定的用户选择属性的存在的信号，使切换模块能够基于相应的用户选择的属性并基于相应的用户定义的交换策略。切换策略可以指定优先级等级或保证服务质量（例如，保证带宽），确保接收到的第2层类型的数据帧接收适当的切换支持。用于端口过滤器的用户选择的属性和用于切换模块的用户定义的切换策略由主处理器编程。因此，综合网络交换机能够根据第2层用户选择的属性，对第2层类型的数据包执行高级交换操作，以确保与第2类数据包中指定的优先级信息无关的服务质量要求类型数据包和为交换模块建立的用户定义的交换策略。

8. 发明授权

US6115387A Method and apparatus for controlling initiation of transmission of data as a function of received data 失效
标题翻译：控制数据发送的接收数据的函数的方法和装置
公开(公告)号：US6115387A
公开(公告)日：2000-09-05
申请号：US992811
申请日：1997-12-18
申请人： Chandan Egbert , Thomas J. Runaldue , Bahadir Erimli
发明人： Chandan Egbert , Thomas J. Runaldue , Bahadir Erimli
IPC分类号： G06F5/06 , G06F12/12 , H04L12/18 , H04L12/24 , H04L12/46 , H04L12/56 , H04L29/06 , H04Q3/545 , H04L12/54
CPC分类号： H04L12/1881 , G06F12/128 , G06F5/06 , H04L12/4641 , H04L41/0213 , H04L49/30 , H04L49/90 , H04L49/901 , H04L49/9047 , H04L49/9078 , H04L69/26 , H04Q3/54591 , H04L12/1863 , H04L12/4645 , H04L12/467 , H04L49/103 , H04L49/205 , H04L49/3009 , H04L49/3027 , H04L49/351 , H04L49/354 , H04L49/45 , H04Q2213/1316 , H04Q2213/13162
摘要： A method and arrangement for initiating forwarding of data from a device having multiple receive and transmit ports as a function of the data received at the device includes a plurality of ports for receiving and transmitting data. A port vector FIFO forwards a data identifier to initiate forwarding from at least one of the ports of a received set of data. A holding area is controlled by the port vector FIFO and receives data identifiers and holds these data identifiers until released by the port vector FIFO. The release of a data identifier initiates the forwarding of the data, and each data identifier uniquely identifies each set of data received at the device. The port vector FIFO, upon receiving a data identifier, uses the data identifier to determine the receive port that is receiving the set of data identified by the data identifier. It then determines the mode of that receive port, and releases the data identifier in accordance with the designated mode of that receive port and the data received at that receive port.
摘要翻译：用于从具有多个接收和发送端口的设备开始转发数据作为在设备处接收的数据的函数的方法和装置包括用于接收和发送数据的多个端口。端口向量FIFO转发数据标识符以发起从所接收的一组数据中的至少一个端口的转发。保持区域由端口向量FIFO控制，并接收数据标识符并保存这些数据标识符，直到由端口向量FIFO释放。数据标识符的释放启动数据的转发，并且每个数据标识符唯一地标识在设备处接收到的每组数据。端口向量FIFO在接收到数据标识符后，使用数据标识符来确定接收由数据标识符标识的数据集合的接收端口。然后确定该接收端口的模式，并根据接收端口的指定模式和在该接收端口接收的数据释放数据标识符。

9. 发明授权

US6091707A Methods and apparatus for preventing under-flow conditions in a multiple-port switching device 失效
标题翻译：用于防止多端口开关装置中的欠流条件的方法和装置
公开(公告)号：US6091707A
公开(公告)日：2000-07-18
申请号：US993886
申请日：1997-12-18
申请人： Chandan Egbert , Bahadir Erimli , Eric Tsin-Ho Leung , Thomas J. Runaldue
发明人： Chandan Egbert , Bahadir Erimli , Eric Tsin-Ho Leung , Thomas J. Runaldue
IPC分类号： H04L12/56 , H04Q11/04 , H04L12/54
CPC分类号： H04L49/351 , H04L49/103 , H04L49/105 , H04L49/30 , H04Q11/0478 , H04L2012/5649 , H04L2012/5651 , H04L49/20 , H04L49/3009 , H04L49/3027 , H04L49/3054 , H04L49/354
摘要： An interface for use in a data forwarding device is connected between the receive ports and transmit ports of a device. The interface ensures that data being forwarded from a receive port to a transmit port has actually been received. The interface includes a queuing circuit and a de-queuing circuit. The queuing circuit receives data from the receive port, identifies the receive port, counts the data received, and buffers the data. The de-queuing circuit retrieves the buffered data at a scheduled time based on the receive port's mode, and forwards the data to a transmit port provided that the amount of data received by the queuing circuit is at least as great as the amount of data already forwarded by the de-queuing circuit plus a threshold safe level amount of data.
摘要翻译：用于数据转发设备的接口连接在设备的接收端口和发送端口之间。该接口确保从接收端口转发到发送端口的数据已被实际接收。接口包括排队电路和排队电路。排队电路从接收端口接收数据，识别接收端口，对接收到的数据进行计数，并缓冲数据。排队电路基于接收端口的模式在预定的时间检索缓冲的数据，并且将数据转发到发送端口，只要排队电路接收的数据量至少与数据量一样大由排队电路转发加上阈值安全级别的数据量。

10. 发明授权

US06233244B1 Method and apparatus for reclaiming buffers 失效
标题翻译：回收缓冲液的方法和装置
公开(公告)号：US06233244B1
公开(公告)日：2001-05-15
申请号：US08992927
申请日：1997-12-18
申请人： Thomas J. Runaldue , Bahadir Erimli , Chandan Egbert
发明人： Thomas J. Runaldue , Bahadir Erimli , Chandan Egbert
IPC分类号： G06F1206
CPC分类号： H04L49/9021 , G06F5/06 , H04L41/0213 , H04L49/20 , H04L49/255 , H04L49/30 , H04L49/3009 , H04L49/3027 , H04L49/351 , H04L49/354 , H04L49/45 , H04L49/90 , H04L49/901 , H04L49/9047 , H04L49/9073 , H04L49/9078 , H04L69/26 , H04Q3/54591 , H04Q2213/1316 , H04Q2213/13162
摘要： A method and arrangement for reclaiming buffers used to store frames, following the transmission of a frame, checks to determine whether the transmission of a frame is the last copy of that frame to be transmitted. If it is the last copy, or the only copy, the buffers storing that frame are reclaimed for reuse after the contents of each buffer are transmitted. If the frame is not the last copy, or it cannot be determined whether it is the last copy, then the frame is transmitted and a count of the number of transmitted copies of that frame is decremented. Once all of the copies have been transmitted, the buffer reclaiming process is initiated.
摘要翻译：用于回收用于存储帧的缓冲器的方法和装置，在发送帧之后，检查以确定帧的传输是否是要发送的帧的最后一个拷贝。如果是最后一个副本或唯一的副本，则在发送每个缓冲区的内容之后，存储该帧的缓冲区被回收以供重用。如果帧不是最后一个副本，或者不能确定它是否是最后一个副本，则发送帧，并且该帧的发送副本的数量减少。一旦所有副本都被传输，缓冲区回收过程就会启动。

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